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Image processing device, imaging device, image processing method, and computer readable medium

a technology of image processing and imaging device, which is applied in the field of image processing device, imaging device, image processing method, and computer readable medium, can solve the problems of difficult adjustment of focus accurately to the perfect focus position, inability to display contrast at a greater resolution, etc., and achieve and better visual checkability of displacement

Active Publication Date: 2015-06-25
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides an image processing device, an imaging device, an image processing method and an image processing program that can improve the visual checkability of displacement corresponding to parallax between images. The image processing device includes an image acquisition section that acquires two images, a parallax computation section that computes the parallax between pixels in each image, an expansion amount decision section that determines an expansion amount of parallax based on the computed parallax, a coefficient decision section that determines a parallax conversion coefficient for converting the computed parallax into expanded parallax, an image processing section that performs processing on the pixels to expand parallax based on the determined parallax conversion coefficient, a generation section that generates a display image for use in focus verification and a display controller that controls the display section to display the display images. The invention improves the visual checkability of displacement corresponding to parallax between images by enhancing the ability to recognize the location of an object in both images.

Problems solved by technology

However, in digital cameras with the reflex mirror omitted that have become prevalent in recent years, since there is no reflex mirror, there is no method to check the subject-image while displaying the phase difference, and contrast detection methods have had to be relied on.
However, in such cases, contrast cannot be displayed at a resolution greater than that of a display device, such as a Liquid Crystal Display (LCD), requiring adoption of methods such as enlarging a portion for display.
Moreover, due to the low display resolution of an electronic viewfinder of a camera and a display (for example an LCD) provided on the back face side of a camera, it is difficult to adjust focus accurately to the perfect focus position (the position where the imaging lens is in the focused state) while viewing a split-image.

Method used

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  • Image processing device, imaging device, image processing method, and computer readable medium
  • Image processing device, imaging device, image processing method, and computer readable medium
  • Image processing device, imaging device, image processing method, and computer readable medium

Examples

Experimental program
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first exemplary embodiment

[0071]FIG. 1 is a perspective view illustrating an example of an external appearance of an imaging device 100 according to a first exemplary embodiment. FIG. 2 is a back view of the imaging device 100 illustrated in FIG. 1.

[0072]The imaging device 100 is an interchangeable lens camera, and is a digital camera with a camera body 200 and an interchangeable lens 300 (imaging lens and focusing lens 302 (manual operation section)) that is interchangeably mounted to the camera body 200, and without a reflex mirror. A HYBRID FINDER (registered trademark) 220 is also provided to the camera body 200. HYBRID FINDER 220 indicates, for example, a finder capable of selective operation as an optical viewfinder (referred to as “OVF” below), or as an electronic viewfinder (referred to as “EVF” below).

[0073]The camera body 200 and the interchangeable lens 300 are mounted interchangeably by coupling a mount 256 provided to the camera body 200 together with a mount 346 (see FIG. 3) provided on the int...

second exemplary embodiment

[0216]In the first exemplary embodiment, an example is given of the imaging device 100, however modified examples of the imaging device 100 include mobile terminal devices such as, for example, mobile phones and smartphones including a camera function, personal digital assistants (PDAs), mobile gaming devices, or the like. Detailed explanation follows regarding an example of a smartphone, with reference to the drawings.

[0217]FIG. 30 is a perspective view illustrating an example of the external appearance of a smartphone 500. The smartphone 500 illustrated in FIG. 30 includes a flat plate shaped casing 502, and a display and input section 520 provided on one face of the casing 502 and integrating together a display panel 521 serving as a display section and an operation panel 522 serving as an input section. The casing 502 includes a speaker 531, a microphone 532, an operation section 540, and a camera section 541. Note that the configuration of the casing 502 is not limited thereto,...

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PUM

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Abstract

There is provided an image processing device, includes: an expansion amount decision section that, for each target pixel for image processing in a first image and a second image, decides on an expansion amount of parallax according to parallax; a coefficient decision section that, for each target pixel for image processing in the first image and the second image, decides on a parallax conversion coefficient for converting the parallax into expanded parallax based on the expansion amount decided by the expansion amount decision section; an image processing section that performs processing on the target pixels to expand parallax based on the parallax conversion coefficient decided by the coefficient decision section; a generation section that generates a first display image based on an image signal, and generates a second display image for use in focus verification based on the first image and the second image.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a continuation application of International Application No. PCT / JP2013 / 071181, filed Aug. 5, 2013, the disclosure of which is incorporated herein by reference in its entirety. Further, this application claims priority from Japanese Patent Application No. 2012-205906, filed Sep. 19, 2012, the disclosure of which is incorporated herein by reference in its entirety.BACKGROUND[0002]1. Technical Field[0003]The present invention relates to an image processing device, an imaging device, an image processing method, and an computer readable medium.[0004]2. Related Art[0005]Digital cameras are widely known that are provided with autofocus, in which phase difference detection methods and contrast detection methods are employed, and also what is referred to as a manual focus mode, in which a user can manually perform focus adjustment.[0006]Digital cameras including a manual focus mode are known in which a reflex mirror is provided...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): H04N13/00H04N5/232
CPCH04N13/0011H04N5/23293H04N5/23212G02B7/34G03B13/36H04N2013/0081H04N13/111H04N13/211H04N23/672H04N23/633H04N25/704H04N23/843H04N25/134
Inventor IZAWA, KATSUTOSHIAOKI, TAKASHI
Owner FUJIFILM CORP